227 S ROCK RIVER Rd, Diamond Bar, CA 91765

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Off market jul 2007 for $560K

$933,254

Est. refi paymentEst. refi $3,756/mo

•

— ba

•

1,848

sq ft

227 S ROCK RIVER Rd, Diamond Bar, CA 91765

About this home

!!$35,000 PRICE REDUCTION!!Hurry Before The Sellers Change Their Minds!EXCELLENT 5 BEDROOM FLOORPLAN w/ 2 Bedrooms 1 Bath Downstairs. Located Near EXCELLENT SCHOOLS. Spacious 1850 SQUARE FOOT 2 Story Home On A Huge 8280 Square Foot Lot w/ Pool Sized Back Yard And Covered Patio. KOI POND WATER FEATURE. REMODELED KITCHEN With Beautiful Maple Cabinets And Oak Flooring. EXQUISITE OAK DOUBLE DOOR TILED ENTRY Opens Up To Living Room w/ Fireplace. GREAT Open Style FAMILY KITCHEN. Auto Sprinklers Front And Back.

Single-familyProperty Type

1964Year Built

8,280 sq ftLot Size

$505Est. Price/Sq.Ft.

2 car garageParking

Listed by Steve Ramsaur •DRE #01408032 • Coldwell Banker Ambassador

Bought with Steve Ramsaur •DRE #01408032

Redfin checked: 2 minutes ago

•Source:CRMLS #P567191

Redfin Estimate

$933,254

$373K since sold in July 2007$18K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 4.4% lower than the average sale price ($976K) of 5 comparable homes.

SOLD JUL 24, 2026
$945,000
A
4 beds2 baths1,503 sq ft
23905 Cholame, Diamond Bar, CA 91765
SOLD APR 17, 2026
$980,000
B
5 beds3 baths1,864 sq ft
22942 Sunset Crossing Rd, Diamond Bar, CA 91765
Exp Realty of California Inc
SOLD MAY 22, 2026
$1,240,000
C
4 beds2 baths1,708 sq ft
624 Great Bend Dr, Diamond Bar, CA 91765
SOLD JUN 9, 2026
$891,000
D
4 beds2 baths1,577 sq ft
353 S Rock River Rd, Diamond Bar, CA 91765
SOLD SEP 2, 2026
$825,000
E
4 beds2 baths1,489 sq ft
105 N Palo Cedro, Diamond Bar, CA 91765

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Earn from this home

Sell

$660,607

Est. take-home

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Refinance

Est. cash available

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Rent

$3,333/mo

Redfin rental estimate

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Market trends in 91765, CA

Last updated October 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-list price

97.1%

0.7% MoM

Median sale price

$1.1M

$19K MoM

Avg. days on market

67d

6 days MoM

Recently sold homes

11 MoM

New listings for sale

OPEN SAT
$1,249,000
5 beds3 baths2,240 sq ft
233 N Platina, Diamond Bar, CA 91765
COMING SOON
$3,300,000
6 beds9 baths10,352 sq ft
2677 Wagon Train, Diamond Bar, CA 91765
$595,000
2 beds2 baths1,191 sq ft
1120 Cleghorn Unit C, Diamond Bar, CA 91765
LISTED BY REDFIN
$4,980,000
7 beds7.5 baths7,660 sq ft
2611 Steeplechase Ln, Diamond Bar, CA 91765
$1,079,000
4 beds3 baths2,126 sq ft
23548 Casa Loma, Diamond Bar, CA 91765
$430,000
2 beds2 baths788 sq ft
22761 Lakeway #414, Diamond Bar, CA 91765
$800,000
3 beds3 baths1,720 sq ft
2002 Silver Hawk #14, Diamond Bar, CA 91765
$438,000
2 beds2 baths934 sq ft
22820 Hilton Head #78, Diamond Bar, CA 91765
Golden Nest Realty Group
3D WALKTHROUGH
$1,150,000
5 beds3 baths2,204 sq ft
23917 Decorah, Diamond Bar, CA 91765
$990,000
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23266 Forest Cyn, Diamond Bar, CA 91765
See all

Provided by Redfin

Sale history for 227 S ROCK RIVER Rd

Date

Event

Price

CRMLS #Z07048814

Jun 23, 2007

Listing Removed

—

Jun 5, 2007

Price Changed

$549,900

$298/sq ft

May 18, 2007

Price Changed

$554,900

$300/sq ft

May 1, 2007

Price Changed

$559,900

$303/sq ft

Apr 4, 2007

Listed

$584,900

$317/sq ft

CRMLS #P567191

Jul 8, 2007

Sold

$560,000

$303/sq ft

Jun 19, 2007

Listing Removed

—

Jun 1, 2007

Price Changed

$549,900

$298/sq ft

May 13, 2007

Price Changed

$554,900

$300/sq ft

Apr 21, 2007

Price Changed

$559,900

$303/sq ft

Mar 22, 2007

Listed

$584,900

$317/sq ft

CRMLS #H684063

Feb 22, 2007

Listing Removed

—

Jan 26, 2007

Listed

$596,000

$323/sq ft

CRMLS #H229016

Jun 24, 2002

Sold

$285,000

$154/sq ft

May 7, 2002

Listed

$285,000

$154/sq ft

Public Records

Jun 29, 1993

Sold

$152,000

$82/sq ft

Public Records

Sep 26, 1990

Sold

$190,000

$103/sq ft

Public Records

Oct 19, 1984

Sold

$113,500

$61/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$10,025 (+8.3%)

$600,219 + $150,048

$750,267

2024

$9,255 (+2.0%)

$588,450 + $147,106

$735,556

2023

$9,075 (+1.6%)

$576,912 + $144,222

$721,134

2022

$8,937 (+3.2%)

$565,600 + $141,395

$706,995

2021

$8,662 (+8.0%)

$554,510 + $138,623

$693,133

2020

$8,021 (−4.3%)

$538,000 + $135,000

$673,000

2019

$8,378 (+6.2%)

$492,000 + $123,000

$615,000

2018

$7,889 (+11.8%)

$492,000 + $123,000

$615,000

2017

$7,057 (+2.8%)

$436,000 + $109,000

$545,000

2016

$6,866 (+4.3%)

$436,000 + $109,000

$545,000

2015

$6,586 (+9.0%)

$436,000 + $109,000

$545,000

2014

$6,041 (+21.4%)

$373,200 + $93,000

$466,200

2012

$4,975 (−6.9%)

$273,000 + $68,000

$341,000

2011

$5,343 (−0.1%)

$296,000 + $74,000

$370,000

2010

$5,348 (+15.8%)

$324,700 + $81,100

$405,800

2009

$4,619 (−32.2%)

$324,700 + $81,100

$405,800

2008

$6,808

$285,300 + $71,300

$356,600

Tax history for 227 S ROCK RIVER Rd

Year

Property tax

Land + Additions

Assessment*

2025

$10,025 (+8.3%)

$600,219 + $150,048

$750,267

2024

$9,255 (+2.0%)

$588,450 + $147,106

$735,556

2023

$9,075 (+1.6%)

$576,912 + $144,222

$721,134

2022

$8,937 (+3.2%)

$565,600 + $141,395

$706,995

2021

$8,662 (+8.0%)

$554,510 + $138,623

$693,133

2020

$8,021 (−4.3%)

$538,000 + $135,000

$673,000

2019

$8,378 (+6.2%)

$492,000 + $123,000

$615,000

2018

$7,889 (+11.8%)

$492,000 + $123,000

$615,000

2017

$7,057 (+2.8%)

$436,000 + $109,000

$545,000

2016

$6,866 (+4.3%)

$436,000 + $109,000

$545,000

2015

$6,586 (+9.0%)

$436,000 + $109,000

$545,000

2014

$6,041 (+21.4%)

$373,200 + $93,000

$466,200

2012

$4,975 (−6.9%)

$273,000 + $68,000

$341,000

2011

$5,343 (−0.1%)

$296,000 + $74,000

$370,000

2010

$5,348 (+15.8%)

$324,700 + $81,100

$405,800

2009

$4,619 (−32.2%)

$324,700 + $81,100

$405,800

2008

$6,808

$285,300 + $71,300

$356,600

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Zoning

Beds

Baths

Stories

—

Lot width

—

Lot depth

—

Lot size

8,296 Sq. Ft.

Year renovated

1964

Sq. Ft.

1,848

Year built

1964

Style

Single Family Residential

County

Los Angeles County

APN

8718033003

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 7, 2026.

RLM

Low/Medium Density Residential District

The RLM zoning district is intended primarily for existing subdivided areas developed with detached single-family dwellings. The maximum allowed density for new residential subdivisions within this zoning district will be five dwellings per gross acre. The RLM zoning district is consistent with the low density residential land use category of the general plan.

Permitted uses

Include but are not limited to:

Housing-Single unit
Housing-Senior
Housing-Other
Infrastructure
Fire house
Police station
Park & open space

Property details

Parking

Parking / Garage Information
# of Garage Spaces: 2

Interior

Kitchen Information
Appliances: Built-In, Dishwasher, Electric Cooking
Has Appliances

Fireplace Information
Electric, Living Room, Wood
Has Fireplace

Flooring Information
Carpet, Wood

Heating Information
Forced Air
Has Heating

Interior Features
Double Door Entry
Copper Plumbing Full
Levels: Two

Exterior

Exterior Information
Roof: Composition
Fencing: Blockwall
Has Fence
Construction Materials: Stucco

Exterior Features
Patio And Porch Features: Covered
Has Patio
Pool Features: None
Has Sprinklers

Lot Information
Lot Size Source: Assessor's Data
Lot Size Dimensions: 65 x 139
Lot Features: Sprinklers In Front, Sprinklers In Rear

Property Information
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8718033003
Has View

Utilities

Utilities Information
Sewer: Sewer Paid
Sewer Connected
Water Source: See Remarks

Location

School Information
High School District: Pomona Unified

Location Information
Latitude: 34.00052800
Longitude: -117.81184300
Other Subdivision Name: Other
Subdivision Name: Other

Public facts

Beds: 5
Baths: 2.0
Sq. Ft.: 1,848
Stories: —
Lot Size: 8,296 square feet
Style: Single Family Residential
Year Built: 1964
Year Renovated: 1964
County: Los Angeles County
APN: 8718033003

Home facts updated by county records on Oct 7, 2026

Other

Listing Information
Days Active in MLS: 1
Continuous Days Active in MLS: 1

Listing Agent Information
List Agent First Name: Steve
List Agent Last Name: Ramsaur

Listing Office Information
List Office Name: Century 21 Ambassador

Selling Agent Information
Buyer Agent First Name: Steve
Buyer Agent Last Name: Ramsaur

Selling Office Information
Buyer Office Name: Century 21 Ambassador

Around this home

Schools

K - 12
Preschool & daycare

Armstrong Elementary School

Public K-6 • Assigned • 0.1mi

5/10

Lorbeer Middle School

Public 7-8 • Assigned • 0.5mi

5/10

Diamond Ranch High School

Public 9-12 • Assigned • 2.1mi

8/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

The Diamond Bar market is shifting, creating new opportunities for both buyers and sellers. Buyers have a bit more negotiating room, while well-priced, well-maintained homes can still attract strong interest. If you’re considering a move, I’d be...
2 weeks ago • Diamond Bar
Sang Ur
Redfin Premier agent
124 deals
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Climate risks

3/10 Flood Factor

Estimated 10-14% chance of a flood reaching the building in the next 30 years

2/10 Fire Factor

0.00% chance of being in a wildfire in next 30 years

7/10 Heat Factor

7 days above 98° expected this year, 20 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

6/10 Air Factor

10 unhealthy days expected this year, 13 days in 30 years

Provided by First Street

Historical weather

Diamond Bar, CA • 91765

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 10.1 hours in June and 6.8 hours in December, placing it above the U.S. average for solar exposure.

10.1 hrs

6.8 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$887,000 – $1.07M

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Home values near 227 S ROCK RIVER Rd

Data from public records.

Address	Redfin Estimate
267 South Rock River Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$864,405
245 South Rock River Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$836,304
221 South Rock River Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$870,224
212 South Rock River Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 2414 Sq. Ft.	$787,933
236 South Rock River Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1258 Sq. Ft.	$879,039
256 South Rock River Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1258 Sq. Ft.	$748,372
137 South Prospectors Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$895,280

Address	Redfin Estimate
259 South Rock River Rd, Diamond Bar, CA 6 Beds \| 2 Baths \| 2436 Sq. Ft.	$947,113
239 North Rock River Dr, Diamond Bar, CA 5 Beds \| 2 Baths \| 1848 Sq. Ft.	$913,913
215 South Rock River Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1258 Sq. Ft.	$826,490
220 South Rock River Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1258 Sq. Ft.	$770,329
244 South Rock River Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$639,772
151 South Prospectors Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$697,423
131 South Prospectors Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1258 Sq. Ft.	$836,342

Address	Redfin Estimate
253 South Rock River Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$757,193
233 South Rock River Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1500 Sq. Ft.	$861,326
209 South Rock River Rd, Diamond Bar, CA 5 Beds \| - Baths \| 1848 Sq. Ft.	$926,119
228 South Rock River Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1258 Sq. Ft.	$719,392
250 South Rock River Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$869,127
143 South Prospectors Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$855,050
125 South Prospectors Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1465 Sq. Ft.	$851,801

Property information provided by CRMLS when last listed in 2007. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 91765, CA

Sale history for 227 S ROCK RIVER Rd

Tax history for 227 S ROCK RIVER Rd

Public record

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 91765

Home values near 227 S ROCK RIVER Rd

More real estate resources